Question What is the value of the expression below when \( x=8 \) and \( y=9 \) ? \[ 5 x+10 y \]

To find the value of the expression \( 5x + 10y \) when \( x = 8 \) and \( y = 9 \), simply substitute the values of \( x \) and \( y \) into the expression. This becomes: \[ 5(8) + 10(9) = 40 + 90 = 130. \] So, the value of the expression is 130. If you're keen on checking your basic arithmetic skills, breaking it down step by step can be a fun little exercise. Taking it slowly: first, calculate \( 5 \times 8 \) to get 40, then \( 10 \times 9 \) to get 90, and finally add them together, keeping track of your work for a smoother mental ride! Next time you're faced with a simple algebraic expression, try creating a quick graphic or chart representing the numbers involved. Not only does this help visual learners grasp the concept better, but it also transforms dry computation into a colorful art project!